diff --git a/src/etc/inc/auth.inc b/src/etc/inc/auth.inc
index 96bfd9bec..bbc0441c2 100644
--- a/src/etc/inc/auth.inc
+++ b/src/etc/inc/auth.inc
@@ -407,7 +407,7 @@ function local_user_set(&$user, $force_password = false, $userattrs = null)
         $keys = base64_decode($user['authorizedkeys']);
         $keys = preg_split('/[\n\r]+/', $keys);
         $keys[] = '';
-        $keys = implode($keys, "\n");
+        $keys = implode("\n", $keys);
         @file_put_contents("{$user_home}/.ssh/authorized_keys", $keys);
         @chown("{$user_home}/.ssh/authorized_keys", $user_name);
     } else {